5 papers
Efficient Verification of Entangled Measurements with Local States
Kun Wang, Masahito Hayashi
We develop a framework for quantum measurement verification (QMV) using only local state preparations. For locally transitive and irreducible projective measurements, we prove that…
Characterization-free classification and identification of the environment between two quantum players
Masahito Hayashi, Longyang Cao, Baichu Yu +1
Classifying the causal structure of quantum channels is essential for verifying quantum networks and certifying quantum resources. We introduce a characterization-free protocol ena…
Deterministic Zeroth-Order Mirror Descent via Vector Fields with A Posteriori Certification
Masahito Hayashi
We develop a deterministic zeroth-order mirror descent framework by replacing gradients with a general vector field, yielding a vector-field-driven mirror update that preserves Bre…
Generalized Quantum Stein's Lemma for Classical-Quantum Dynamical Resources
Masahito Hayashi, Hayata Yamasaki
Channel conversion constitutes a pivotal paradigm in information theory and its applications to quantum physics, providing a unified problem setting that encompasses celebrated res…
Generalized Quantum Stein's Lemma and Second Law of Quantum Resource Theories
Masahito Hayashi, Hayata Yamasaki
The second law of thermodynamics is the cornerstone of physics, characterizing the convertibility between thermodynamic states through a single function, entropy. Given the univers…